Finding the Fourth Proportional to 557,340.12, 769,176.81 and 315,665.69
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Solution
The fourth proportional to 557,340.12, 769,176.81 and 315,665.69 is: 435,645.52
Step by Step Solution
- Step 1: Write the proportion equation
557,340.12 : 769,176.81 = 315,665.69 : x - Step 2: Convert to fraction form
557,340.12/769,176.81 = 315,665.69/x - Step 3: Cross multiply
557,340.12x = 769,176.81 × 315,665.69 - Step 4: Simplify right side
557,340.12x = 242,802,728,460.65 - Step 5: Solve for x
x = 242,802,728,460.65/557,340.12 - Step 6: Final answer
x = 435,645.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.